fix(styles): increase bottom margin for old password field (#3724)
fix(styles): increase bottom margin for old password field (#3724)

r=@shane-tomlinson
shane-tomlinson/fxa-content-server,vladikoff/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,vladikoff/fxa-content-server,vladikoff/fxa-content-server,shane-tomlinson/fxa-content-server,shane-tomlinson/fxa-content-server,mozilla/fxa-content-server